Outlet valve for water-closet tanks



May2 9, 1923. 1,457,018

- A. A. CARSON OUTLET VALVE FOR WATER CLOSET TANKS Filed May 2, 1919 for Water-Closet Tanks, ofwhichithe, fol-,

Patented May 29, 1923. i

vum reo {STATES LAIJEXANDEB a. CARSON, OFV'BRAINTREE, MAs'sAcHUs irrs.

rice,

OUTLET-VALVE FOR WATER-CLOSET TANKSJ Application filed May 2 To all whom itmau concern: Be it known that 1,.Annxanonn, A. CAR- some citizen of the United States, residing at Braintree, in the county of Norfolk and State of Massachusetts, have invented new and, useful Improvements in Outlet Valves lowingis a specification- This vinvention has relation to outlet valves for water-closets, and more, part1c ularly to those employed in low down I tanks so-called, for controlling the supply of water for flushing siphon closets.

In the modern siphon closet, it is desirable that the bowl of the closet should contain a pool of] water approximately level with the darn located at the junction of the over two inches, and at best contains a small head of water, sothat, when thevalveis;

closed, there is insufficient water contained therein properly to refill the bowl after the siphon-breaks, especially if the break occurs at or after theclosing of the valve.

The object of the present invention is to ensure the delivery ofa sufiicientamount of water to, refill the bowl, subsequent to the breaking of the siphon. In the present case, this is secured by the employment of.

a float-controlled valve, so located, and operated as to close only after the flow of water from the tank has diminshed to such a degree as to causethe siphonic action of the closet to-cease and the refill totakeplace.

More specificallythe float islocated .approximately at the bottom of the tank or near the level, of the outlet, so that it will not release the valve for closing. the outlet, until the solid column of water in the outlet pipehas broken, and the supply water is.

insufficient to fill such pipe, In such case, the .water trickles, down the wall of the pipe, and refills the bowl, before the valve closes.f

, On the accompanying d'rawing, 1

Figure 1 represents a portion ofthe lowdown water-closet-tank, and an outlet valve mechanism, all embodying my invention.

1919. SerialNo. 294,181.,

Figure 2 represents a plan -viewof ithe 1.

valve mechanism;

, I have not shown the' siphon water closet or the entire outlet 'pipe, for they are, well known articles ofmanufacture and their installation in reference to the tank is too familiar to need illustration. .1 t

A portion of the low-downtank isshown, however, and it. has a bottom WVtLllulO with an aperture 11, and amend wall'12." The tank may have (not shown). 1 v. r The valve mechanism (to the details: of

which my invention is not-limited) comprises a casting including an annular the usual sheetmetal lining threaded nipple 15v which, as ordinarily, passes through theaperture 11,'and"is proi vlded with a washer 16' and lock nut 17 to v clamp the base'laand an annular packing 18 against the bottom walllO. The .outlet' I pipe 19, asshown bythedotted lines, is se-. Y

cured to the nippleand leads to the-flushing. inlet of the siphon waterclo'set. 1' F Rising from the base 14- is a. tubular; flange 20.which constitutes afseatfor a valve shown at 21 and subsequently to be described. 22

indicates the usual overflow standpipe, which at its lower end extends'into an elbow, 23} The bore of theelbow,,communicates with the interior of the flange'QO (asindi'cated by dotted-lines), below the upperend thereof,

so that water overflowing from the tank (due to leakage of the inlet cock or other wise) will be discharged into the tank outlet. Two d1ametrically opposite uprights, or

base and elbow,-and' upon them is secured,

at a distance; above the'fiange 20, across bar 25. This bar is provided with anannular elongated boss'26 which'serves as a tubus standards at are cast integrallyiwiththe lar guide for a valve stem=27connected to the valve 21.

disk 0 of packing materialto fit upon the valve I seat afforded; by the upper endlof the annular flange 20.- The stem 2? passes through the center of the-valve, and has twonuts 28, 29,, which clamp the valve be? tween them and secure it adj ustablyto.- the stem. Therupp'er end of the stem is bent or The valve iconsists .of two 1 disks-wand Z) of metal, and an interposed hooked as fat 30lor connection Withthe usual operating handle- (not shown) *by i which the valve is lifted; Then the valve is manually raised, it is E maintained in that po t on. P by l o ec t olle hitch, COIL? sisting of a two-armed lever, one arm 31 of which is bevelled to constitute trigger for engagement with a double-bevelled shoulder 32 on the valve stem 27, and the other arm 33 is formed to receive. a rod 34 having a float 35 on the end thereof. The two arms are angular as sh0wn, the lever as a whole being pivoted or'fulcrumed upon a screw pin 36 passed through lugs or ears 37 formed valve open, the buoyancy of the submerged float maintaining the arm in place. lVhen the: level of the water drops to a point where the float moves the arm from' the dotted line' position to the full line or valve-releasing position, the valve is released and drops on its seat. The outlet in the present in stance comprises the tubular flange or seat, and the nipple, to which is connected the outlet or" flushing pipe. I

The parts are all so related and positioned that the float is close to the bottom of the tank,stand-ing ordinarily in the position shown in dotted lines, neart he level of the valve seat of the outlet,and maintains the valve in its opened position until the level of the water in the tank is just a little higher than the valve seat, and, in fact, is so low and reduced in head as not to fill the outlet.

. Hence, as the level of the water in the tank is lowered, due to the flow of water in the outlet pipe in practically a solid column in sufficient volume to start and maintain the siphonic discharge of the closet,'it reaches a plane where the inflow into the outlet is insuificient to fill the outletand pipe. -The diminishing supply of water is not sufficient to'inaint'ain' the siphonic discharge from the closet and thesiphon breaks. This occurs approximately. when or just beforethe water reaches the level 00-00 in Figure 1. Then the water continues to flow into the outlet in greatly diminished volume,- insufficient however to start or maintain siphonic action in the closet, and, as the level of the water drops tothat shown, the float 35 drops with it, until the arm or trigger 31 releases the valve stem and permits the valve to close.

The water thus supplied is suflicient to refill the closet bowl before the valve closes;

The construction as hereinbefore described and illustrated on the drawings is" one in which the valve 21 is located in axial alinement with the outlet and it is loosely guided in the elongated boss 26 so that when the valve is permitted to'drop it will accurately seat" itself upon the valve seat being" held thereagainst by the pressure of water. It is important that the latch or arm 31 should not bear at any time against the stem 27 itself, when the valve is seated, so as to lift 34: and ifthe arm 31 is in engagement with the stem above the double beveled shoulder 32, the stem would be thrust or rocked laterally so as to lift the. valve slightly from its seat at oneside. Consequently the finger 3'8 performs an important function. It permits the end of the arm or latch 31 to engage only the shoulder 32 on the stem and prevents the arm from engaging the stem itself above the shoulder. In other words, this finger is located in such relationship to the elongated boss 26 that under normal conditions when the tank is full a'ndthe float tends to move upwardly, the finger engages the boss and holds the end of'the arm 31 away from the stem 2} sufliciently to permit the valve to seat itself firmly against its'seat.

What I claim is: V

The combination of a tank, an outlet therefrom for supplying water for the siphonic discharge of a wate'ncloset, a valve associated with said outlet and having a central shouldered stem by which it may be bodily raised, a stationary guide for loosely engaging and guiding said stem as the valve is moved toward and away from'said outlet, a pivoted latch having only a single abutment face for engaging only said shoulder on the stemand locking said valve in fully open or raised position, said latch having a finger or stop to engage said stationary guide and prevent said latch from hearing against said stem when said valve is closed, and a float connected to said latch tocause the same to engage a'ndreleasethe shoulder on thejstem of'said valve, said'fioat' and latch beingrig'idly connected and so related, and said-float being'so located in respect of said outlet, that said latch will" notr'elease said valve from its fully open or raisedposit'io n until after the level of the water in the tan-1r has been lowered to a pl'aneat' which the flow of water through said outlet is insufficient to fill the same orto' maintain said" si-- phonic discharge, whereby adiminished volume of water is delivered'through such outlet to refill thebow-l before the valve is released and closed.

In testimony whereof I have afiixed' my signature.

v ALEXANDER A. CARSONi 

